Re: Reading records by key using C runtime record i/o functions

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Thanks Chuck!

That's how the developer ended up doing it....no word yet if it works ;)

Charles

On Mon, Nov 14, 2011 at 2:12 PM, CRPence <CRPbottle@xxxxxxxxx> wrote:
> On 14-Nov-2011 08:02 , Charles Wilt wrote:
> > <<SNIP>>
> >
> > if I want to read a set of records with a certain key, do I need
> > to call _rlocate() followed by _rreadK() in a loop or can I use
> > _rreadn()?
> >
> > Note: I'll be dealing with a partial key...
>
>   I am not aware of any requirement for using locate.  For keyed
> processing I recall using just _rreadk() "Read a Record by Key" primed
> with opt=__KEY_EQ then looping with opt=__KEY_NEXTEQ to read another row
> with the same key value as the one found with __KEY_EQ.  Refer to the
> "positioning macros" which are defined in recio.h to see what\how to
> navigate using those /opts/ [processing options].  The specified key
> length enables the partial key, but the key feedback\return value always
> includes the full key value; for the length defined for the file that
> was opened.
>
>   Note there is a C programming list here too.
> http://archive.midrange.com/c400-l
>
> Regards, Chuck
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